Question

На собрании должны выступать 5 человек ( А , В, С, D, E). Сколькими способами их можно разместь в списке выступающих, если А должен выступать первым?

Answer 1

Ответ:4 способа ( не считая А)

Answer 2

Я думаю 6.ABCD,ABDC,ACBD,ACDB,ADBC,ADCB

Answer 3

Calculating the Number of Ways to Arrange Speakers

To calculate the number of ways to arrange the speakers in the list, we can use the concept of permutations. Since A must speak first, the remaining speakers (B, C, D, E) can be arranged among themselves in 4! (4 factorial) ways.

Therefore, the total number of ways to arrange the speakers is given by: Total ways = 1 (for A) * 4! (for B, C, D, E)

Let's calculate the total number of ways using the formula.

Calculation

Total ways = 1 * 4! Total ways = 1 * 24 Total ways = 24

So, there are 24 different ways to arrange the speakers in the list if A must speak first.